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Finding the Fourth Proportional to 12,797.13, 17,659.77 and 7,131.85

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Solution

The fourth proportional to 12,797.13, 17,659.77 and 7,131.85 is: 9,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.13 : 17,659.77 = 7,131.85 : x
  2. Step 2: Convert to fraction form
    12,797.13/17,659.77 = 7,131.85/x
  3. Step 3: Cross multiply
    12,797.13x = 17,659.77 × 7,131.85
  4. Step 4: Simplify right side
    12,797.13x = 125,946,830.67
  5. Step 5: Solve for x
    x = 125,946,830.67/12,797.13
  6. Step 6: Final answer
    x = 9,841.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.